Has anybody run the 305/45/18 MT's
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 15 of 24
2009-2014 Cadillac CTS-V Performance Mods Discussion, Has anybody run the 305/45/18 MT's in Cadillac CTS-V Series Forum - 2009-2014; Thinking about rolling the rear fenders and stepping up to this tire. 28.8" tall tire which seems just about ideal ...
  1. #1
    Junkie414 is offline Cadillac Owners Fanatic
    Automobile(s): 2009 CTS-V
    Join Date
    Apr 2011
    Location
    DFW
    Posts
    454

    Has anybody run the 305/45/18 MT's

    Thinking about rolling the rear fenders and stepping up to this tire. 28.8" tall tire which seems just about ideal for my combo

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    6speeder is offline Cadillac Owners Fanatic
    Automobile(s): CTS-V
    Join Date
    Feb 2010
    Age
    59
    Posts
    293

    Re: Has anybody run the 305/45/18 MT's

    Why do you want something that tall? That'll kill your gear ratios.

  4. #3
    glgjr is offline Cadillac Owners Fanatic
    Join Date
    Jul 2008
    Posts
    128

    Re: Has anybody run the 305/45/18 MT's

    Quote Originally Posted by 6speeder View Post
    Why do you want something that tall? That'll kill your gear ratios.
    He needs the sidewall. His car puts 832/1000 to the tire.

  5. #4
    Junkie414 is offline Cadillac Owners Fanatic
    Automobile(s): 2009 CTS-V
    Join Date
    Apr 2011
    Location
    DFW
    Posts
    454

    Re: Has anybody run the 305/45/18 MT's

    Quote Originally Posted by 6speeder View Post
    Why do you want something that tall? That'll kill your gear ratios.
    I make enough power to justify if. Car runs out of gear in 4th and I would like some more. The more sidewall the better chances of traction.

    + it looks cool lol

  6. #5
    6speeder is offline Cadillac Owners Fanatic
    Automobile(s): CTS-V
    Join Date
    Feb 2010
    Age
    59
    Posts
    293

    Re: Has anybody run the 305/45/18 MT's

    Instead why not run smaller diameter wheels and gain the sidewall that way and keep your gearing. Might require smaller brakes but not as much fender work.

  7. #6
    Rule12b's Avatar
    Rule12b is offline Cadillac Owners Enthusiast
    Automobile(s): 2010 CTS-V Sedan
    Join Date
    Dec 2010
    Location
    Los Angeles
    Posts
    526

    Re: Has anybody run the 305/45/18 MT's

    There isn't a lot of fender to roll back there. They are already mighty thin. Do you think it will give you enough additional clearance?

  8. #7
    Bookinctsv's Avatar
    Bookinctsv is offline Cadillac Owners Fanatic
    Automobile(s): 2011 CTS-V sedan
    Join Date
    Jan 2011
    Location
    Ft.Lauderdale/ Miami
    Posts
    148
    I have the 305/35/19 m/t and d3 springs and i do not rub one bit, i have launched and put alot of weight in the car and no rubber residue has been found on the fender or inner and top walls.

  9. #8
    Junkie414 is offline Cadillac Owners Fanatic
    Automobile(s): 2009 CTS-V
    Join Date
    Apr 2011
    Location
    DFW
    Posts
    454

    Re: Has anybody run the 305/45/18 MT's

    Quote Originally Posted by 6speeder View Post
    Instead why not run smaller diameter wheels and gain the sidewall that way and keep your gearing. Might require smaller brakes but not as much fender work.
    Thats in the plans as well

    Quote Originally Posted by Rule12b View Post
    There isn't a lot of fender to roll back there. They are already mighty thin. Do you think it will give you enough additional clearance?
    Don't really know thats why I posted up

    Quote Originally Posted by Bookinctsv View Post
    I have the 305/35/19 m/t and d3 springs and i do not rub one bit, i have launched and put alot of weight in the car and no rubber residue has been found on the fender or inner and top walls.
    I'm currently on that tire as well which is a 27.6" tire where the other ones are 28.8, BIG difference

  10. #9
    tbh04 is offline Cadillac Owners Member
    Automobile(s): 2009 CTS V Sedan
    Join Date
    Jan 2011
    Location
    AL
    Posts
    46

    Re: Has anybody run the 305/45/18 MT's

    I run hoosier drag radial 335/30/18 and they hook great with no rubbing. Had to use 1/4" spacer because wheels had wrong offset.

  11. #10
    Bushidopupil is offline Cadillac Owners Enthusiast
    Automobile(s): (V)icious Coupe
    Join Date
    Sep 2010
    Location
    FL Panhandle
    Posts
    568

    Re: Has anybody run the 305/45/18 MT's

    Quote Originally Posted by tbh04 View Post
    I run hoosier drag radial 335/30/18 and they hook great with no rubbing. Had to use 1/4" spacer because wheels had wrong offset.
    Is that right? 335/30/18 got any pics? 335 is huge!!

  12. #11
    Dr. Design is offline Cadillac Owners Connoisseur
    Automobile(s): STS, XLR, STS V-Series, CTS V-Series, XTS....
    Join Date
    Aug 2003
    Location
    Design Center
    Age
    36
    Posts
    3,347

    Re: Has anybody run the 305/45/18 MT's

    Hello,

    If you are at stock ride height you will NOT need to roll the fenders for this tire combo.



    We used this tire and it was pretty good.

    Thanks,

    Dr. Design
    D3 Cadillac


    Quote Originally Posted by Junkie414 View Post
    Thinking about rolling the rear fenders and stepping up to this tire. 28.8" tall tire which seems just about ideal for my combo

  13. #12
    Junkie414 is offline Cadillac Owners Fanatic
    Automobile(s): 2009 CTS-V
    Join Date
    Apr 2011
    Location
    DFW
    Posts
    454

    Re: Has anybody run the 305/45/18 MT's

    Quote Originally Posted by Dr. Design View Post
    Hello,

    If you are at stock ride height you will NOT need to roll the fenders for this tire combo.



    We used this tire and it was pretty good.

    Thanks,

    Dr. Design
    D3 Cadillac
    It cleared everywhere without issue? Even the inside frame rail section?

  14. #13
    Dr. Design is offline Cadillac Owners Connoisseur
    Automobile(s): STS, XLR, STS V-Series, CTS V-Series, XTS....
    Join Date
    Aug 2003
    Location
    Design Center
    Age
    36
    Posts
    3,347

    Re: Has anybody run the 305/45/18 MT's

    Yes. Correct inside frame rails were just fine. However that is with the wheel that we built for it. But size wise you should be fine.

    Thanks,

    Dr. Design
    D3 Cadillac

    Quote Originally Posted by Junkie414 View Post
    It cleared everywhere without issue? Even the inside frame rail section?

  15. #14
    tbh04 is offline Cadillac Owners Member
    Automobile(s): 2009 CTS V Sedan
    Join Date
    Jan 2011
    Location
    AL
    Posts
    46

    Re: Has anybody run the 305/45/18 MT's

    I have pictures but don't know how to post them. Can someone tell me how. Keeps telling me jpg failed.

  16. #15
    Ste_V_e is offline Cadillac Owners Fanatic
    Automobile(s): CTS-V
    Join Date
    Nov 2011
    Posts
    279

    Re: Has anybody run the 305/45/18 MT's

    Quote Originally Posted by tbh04 View Post
    I have pictures but don't know how to post them. Can someone tell me how. Keeps telling me jpg failed.

    Upload the Image to www.tinypic.com then after it will give you a link for message boards, copy that and post it here. something like [img] picture address [img]

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting